23966406 has 24 divisors (see below), whose sum is σ = 52032240. Its totient is φ = 7972656.

The previous prime is 23966389. The next prime is 23966407. The reversal of 23966406 is 60466932.

23966406 is a `hidden beast` number, since 2 + 3 + 9 + 6 + 640 + 6 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23966407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10735 + ... + 12773.

It is an arithmetic number, because the mean of its divisors is an integer number (2168010).

Almost surely, 2^23966406 is an apocalyptic number.

23966406 is an abundant number, since it is smaller than the sum of its proper divisors (28065834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23966406 is a wasteful number, since it uses less digits than its factorization.

23966406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700 (or 2697 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 23966406 is about 4895.5496116371. The cubic root of 23966406 is about 288.3152652947.

The spelling of 23966406 in words is "twenty-three million, nine hundred sixty-six thousand, four hundred six".